star Tron® enzyme fuel treatment is a multifunctional fuel additive which uses a unique enzyme technology that allows all engines to start easily and run smoothly, even when using ethanol-blended fuel or after sitting idle for months. Star Tron® allows fuel to burn more completely, which results in maximum performance, fuel efficiency and reliable operation. Star Tron® will stabilize fuel for up to 2 years, preventing the formation of gums and other solids that clog carburetors and fuel injectors. Star Tron® helps prevent phase separation by dispersing water throughout fuel as submicron-sized droplets that can be safely eliminated while the engine operates.